JPS6244619Y2

JPS6244619Y2 -

Info

Publication number: JPS6244619Y2
Application number: JP1982078733U
Authority: JP
Priority date: 1982-05-28
Filing date: 1982-05-28
Publication date: 1987-11-26
Also published as: JPS58182568U

Description

【考案の詳細な説明】〔考案の技術分野〕本考案はテレビ共同受信用の分岐分配器に係
り、特に、複数本の有線テレビ信号伝送幹線の選
択切換えを行なつて選択したテレビ信号を加入者
宅用引込線に供給する分岐分配器に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a branching/distributing device for joint TV reception, and in particular, to select and switch between multiple wired TV signal transmission main lines to add the selected TV signal. This invention relates to a branch distributor that supplies service lines for private residences.

[Technical background of the invention and its problems]

有線テレビ放送のテレビ信号伝送システムにお
いて、第１図に示すように、放送局１から伝送さ
れるテレビ信号を多数の加入者宅に分配するため
には、テレビ信号伝送幹線２−１に分岐器および
分配器３−１を多数直列接続してこの分配器３−
１から引込線４−１を介して各加入者宅５へテレ
ビ信号を分配している。 In a television signal transmission system for cable television broadcasting, as shown in Figure 1, in order to distribute the television signal transmitted from the broadcasting station 1 to a large number of subscriber homes, a branch is installed on the television signal transmission main line 2-1. and a large number of distributors 3-1 are connected in series.
1 to each subscriber's home 5 via a drop-in line 4-1.

ところが、テレビ信号の増加に伴なつてテレビ
信号伝送幹線を増設した場合、この増設された幹
線２−２からのテレビ信号を多数の既加入者宅５
へ分配するためには、在来線と同じように分岐器
および分配器３−２を増設し、この分配器３−２
から増設した引込線４−２と既設の引込線４−１
とを切換器６を介してテレビジヨン受像機７に接
続し、切換器６により選択される引込線４−１ま
たは４−２を介してテレビ信号をテレビジヨン受
像機７に分配するようにしている。 However, when TV signal transmission main lines are added due to the increase in TV signals, the TV signals from the added main line 2-2 are transmitted to many existing subscriber homes 5.
In order to distribute to
Service line 4-2 added from 4-2 and existing service line 4-1
are connected to the television receiver 7 via the switch 6, and the television signal is distributed to the television receiver 7 via the drop-in line 4-1 or 4-2 selected by the switch 6. .

このように、幹線の増設にともない、それに応
じて分岐器および分配器と引込線の増設工事を行
なわなければならないという不利不便があつた。 As described above, along with the addition of main lines, there was the disadvantage and inconvenience of having to carry out additional construction work for branches, distributors, and service lines accordingly.

そこで、このような不利不便を解消し、しかも
設置環境が悪い地域でも使用することができるよ
うに、出願人等は先に第２図に示すようなテレビ
信号の分岐分配システムを提案した。第２図にお
いて、第１図と同一要素は同一符号が付されてい
る。第２図中、３は分岐器および分配器であり、
従来の２つの分岐器および分配器３−１，３−２
を１つの筐体内に収納して１個の分岐器および分
配器を構成している。この分岐器および分配器３
で分配されたテレビ信号は、避雷器を具えた保案
器１０、電磁誘導等の外部から侵入するノイズを
阻止する波器１１、テレビ信号を増幅するため
の増幅器１２、端子盤を具えた接続中継器１３、
屋内用の分配器１４と分岐器１５、分岐器からな
るテレビ信号供給用の直列ユニツト１６、および
切換スイツチ６を介して、テレビジヨン受像機７
に供給される。なお、第２図中１７は壁面端子で
あり、前記直列ユニツト１６の末端に接続されて
テレビ信号を供給する。 Therefore, in order to eliminate such disadvantages and inconveniences, and to enable use even in areas with poor installation environments, the applicant and others previously proposed a television signal branching and distribution system as shown in FIG. In FIG. 2, the same elements as in FIG. 1 are given the same reference numerals. In Fig. 2, 3 is a branch and a distributor;
Two conventional branchers and distributors 3-1, 3-2
are housed in one housing to constitute one branch and distributor. This branch and distributor 3
The distributed TV signal is sent to a protector 10 equipped with a lightning arrester, a wave device 11 to block noise from entering from the outside such as electromagnetic induction, an amplifier 12 to amplify the TV signal, and a connection relay equipped with a terminal board. Vessel 13,
The television receiver 7 is connected via an indoor distributor 14 and a branch 15, a series unit 16 for supplying television signals consisting of a branch, and a changeover switch 6.
is supplied to Note that 17 in FIG. 2 is a wall terminal, which is connected to the end of the series unit 16 and supplies a television signal.

しかしながら、このように構成される分岐分配
シスステムにおいては、分岐器および分配器３−
２の増設にともなう配線工事を簡略化できるもの
の、引込線４−１，４−２の数は従来と同様に２
本必要であり、引込線４−２の増設工事にともな
う手数は何ら解消されていない。 However, in the branch distribution system configured in this way, the branch and distributor 3-
Although the wiring work associated with the addition of 4-1 and 4-2 can be simplified, the number of lead-in wires 4-1 and 4-2 remains the same as before.
This is necessary, and the trouble associated with the extension work of the service line 4-2 has not been resolved at all.

[Purpose of invention]

本考案は、以上のような不利不便を解消するた
めになされたものであつて、分岐器および分配器
と引込線を増設することなく有線テレビ信号伝送
幹線の切換選択を行なえる構造簡単な分岐分配器
を提供することを目的とする。 The present invention was devised to eliminate the disadvantages and inconveniences described above, and is a branch distribution system with a simple structure that allows switching and selection of cable TV signal transmission main lines without adding branchers, distributors, and drop-in lines. The purpose is to provide equipment.

[Summary of the idea]

この目的を達成するため、本考案では、複数本
の幹線にそれぞれ接続され各伝送線からのテレビ
信号を分岐分配する少なくとも一対以上の分岐分
配回路と、この対をなす分岐分配回路の出力側に
設けられた分岐分配出力端子と、この出力端子と
前記分岐分配回路の出力側との間に設けられた切
換スイツチとを、筐体に収納し、切換信号により
前記切換スイツチを切換えて前記分岐分配出力端
子に分岐分配回路の出力側のいずれか１つを切換
え接続するようにしている。 In order to achieve this objective, the present invention includes at least one pair of branch distribution circuits that are connected to multiple main lines and branch and distribute television signals from each transmission line, and a A branch distribution output terminal provided and a changeover switch provided between this output terminal and the output side of the branch distribution circuit are housed in a housing, and the changeover switch is switched by a switching signal to perform the branch distribution. One of the output sides of the branch distribution circuit is selectively connected to the output terminal.

[Example of idea]

第３図は本考案の一実施例に係る分岐分配器の
説明図であり、２３は分岐分配器、２４は切換信
号発生器である。なお、前記第１図と同一要素は
同一付号を付してその説明を省略する。 FIG. 3 is an explanatory diagram of a branch distributor according to an embodiment of the present invention, where 23 is a branch distributor and 24 is a switching signal generator. Note that the same elements as those in FIG.

この実施例に係る分岐分配器２３が前記第１図
および第２図と異なる点は、従来の分岐回路と分
配回路とを結合し、複数対の幹線用入出力端子と
分岐分配信号の切換スイツチとを前記分岐分配回
路に設け、これらを一つの筐体内に収納した点で
ある。 The branch distributor 23 according to this embodiment is different from those shown in FIGS. 1 and 2 above in that it combines a conventional branch circuit and a distribution circuit, and has multiple pairs of main line input/output terminals and a switch for switching branch distribution signals. and are provided in the branch distribution circuit, and these are housed in one housing.

第４図は分岐分配器２３の構成図である。図中
３０は分岐分配器用筐体であり、この筐体３０の
側壁には幹線用の入力端子３１−１，３１−２と
出力端子３２−１，３２−２とがそれぞれ設けら
れる。これら各一対の入出力端子３１−１，３２
−１と３１−２，３２−２との間にはそれぞれ分
岐分配回路３３−１，３３−２が接続される。こ
の分岐分配回路３３−１，３３−２は分岐回路と
分配回路とを結合した受動回路で構成され、入力
端子３１−１，３１−２から入るテレビ信号を分
岐分配して複数個の出力端子３５−１，３５−
２，３５−３，３５−４と３６−１，３６−２，
３６−３，３６−４とへそれぞれ出力する。この
対応する出力端子３５−１と３６−１，３５−２
と３６−２，３５−３と３６−３，３５−４と３
６−４の間には、分岐分配出力端子３７−１，３
７−２，３７−３，３７−４に接続された切換ス
イツチ３８−１，３８−２，３８−３，３８−４
がそれぞれ設けられ、この切換スイツチ３８−１
〜３８−４を切換えることにより各分岐分配出力
端子３７−１〜３７−４をそれに対応する前記出
力端子３５−１〜３５−４，３６−１〜３６−４
のいずれか１つに切換接続される。切換スイツチ
３８−１〜３８−４はスイツチングトランジス
タ、リレー等で構成され、各分岐分配出力端子３
７−１〜３７−４に接続される各引込線４からの
切換信号により切換え動作を行なう。この切換信
号は前記第３の切換信号発生器２４から出力され
る。この際、第４図に示すように各分岐分配出力
端子３７−１〜３７−４にはテレビ信号n₁が出力
されるとともに切換信号n₂が入力されることにな
るので、両信号の切分けを行なうための回路３９
を、例えば分岐分配出力端子３７−１〜３７−４
と切換スイツチ３８−１〜３８−４との間に設け
ることが必要となる。この切分け回路３９として
は、例えば、高周波テレビ信号阻止用のフイルタ
と切換信号（例えば、直流信号）阻止用のフイル
タとで構成すればよい。 FIG. 4 is a block diagram of the branch distributor 23. In the figure, numeral 30 denotes a branch/distributor housing, and main line input terminals 31-1, 31-2 and output terminals 32-1, 32-2 are provided on the side walls of this housing 30, respectively. Each pair of input/output terminals 31-1, 32
Branch distribution circuits 33-1 and 33-2 are connected between -1 and 31-2 and 32-2, respectively. The branch distribution circuits 33-1 and 33-2 are composed of passive circuits that combine a branch circuit and a distribution circuit, and branch and distribute television signals input from the input terminals 31-1 and 31-2 to a plurality of output terminals. 35-1, 35-
2, 35-3, 35-4 and 36-1, 36-2,
36-3 and 36-4, respectively. These corresponding output terminals 35-1, 36-1, 35-2
and 36-2, 35-3 and 36-3, 35-4 and 3
Between 6-4, branch distribution output terminals 37-1 and 3
Changeover switch 38-1, 38-2, 38-3, 38-4 connected to 7-2, 37-3, 37-4
are provided respectively, and this changeover switch 38-1
38-4, each branch distribution output terminal 37-1 to 37-4 is connected to the corresponding output terminal 35-1 to 35-4, 36-1 to 36-4.
It is switched and connected to one of the following. The changeover switches 38-1 to 38-4 are composed of switching transistors, relays, etc., and each branch distribution output terminal 3
The switching operation is performed by switching signals from each lead-in line 4 connected to 7-1 to 37-4. This switching signal is output from the third switching signal generator 24. At this time, as shown in FIG. 4, the television signal _n1 is output and the switching signal _n2 is input to each branch distribution output terminal 37-1 to 37-4, so both signals can be switched. Circuit 39 for dividing
For example, branch distribution output terminals 37-1 to 37-4
and the changeover switches 38-1 to 38-4. This separation circuit 39 may be constructed of, for example, a filter for blocking high-frequency television signals and a filter for blocking switching signals (for example, DC signals).

以上のように構成される分岐分配器２３では、
加入者宅５内に設けた切換信号発生器２４から切
換信号が発せられると、この切換信号が引込線
４、分岐分配出力端子３７−１〜３７−４を介し
て切換スイツチ３８−１〜３８−４に加えられ、
この切換スイツチ３８−１〜３８−４の接続状態
が切換わるので、加入者宅５では各入力端子３１
−１，３１−２から入るテレビ信号の選択受信が
任意に行なえる。このように加入者宅５では１本
の引込線４を介して希望のテレビ信号を選択受信
できるので、幹線を増加しても分岐分配器や引込
線を増設する必要がないという利点を有する。ま
た、第２図に示すような保安器１０、波器１
１、増幅器１２等が既に配設されていれば、それ
らを増設する必要がなく、それらの装置をそのま
ま利用できる。さらにまた、１本の引込線を介し
て切換信号と分岐分配されたテレビ信号とを伝送
するようにしたので、切換信号伝送線を別途設け
る必要がなく、配線工事の簡略化が図れる。 In the branch distributor 23 configured as above,
When a switching signal is generated from the switching signal generator 24 installed in the subscriber's premises 5, this switching signal is sent to the switching switches 38-1 to 38- through the drop-in line 4 and the branch distribution output terminals 37-1 to 37-4. added to 4,
Since the connection states of the changeover switches 38-1 to 38-4 are changed, each input terminal 31 at the subscriber's premises 5
-1 and 31-2 can be selectively received. In this way, a desired television signal can be selectively received at the subscriber's house 5 through one drop-in line 4, so there is an advantage that there is no need to add branch distributors or drop-in lines even if the number of main lines is increased. In addition, a safety device 10 and a wave device 1 as shown in FIG.
1. If the amplifier 12 and the like are already installed, there is no need to add them, and these devices can be used as they are. Furthermore, since the switching signal and the branched and distributed television signal are transmitted through one drop-in line, there is no need to separately provide a switching signal transmission line, and wiring work can be simplified.

なお、前記実施例において、切換信号は幹線２
−１，２−２を介して入力端子３１−１，３１−
２または出力端子３２−１，３２−２から入力し
て切換スイツチ３８−１〜３９−４を切換えるよ
うな回路構成としてもよい。このような回路構成
にすれば、前記実施例と同様の利点を有する他、
次のような利点も有する。即ち、複数本の幹線２
−１，２−２中の１線（例えば、２−１）に切断
事故等が生じ、この１線２−１からのテレビ信号
の伝送が不可能となつた場合、他の幹線２−２か
ら切換信号を伝送して切換スイツチ３８−１〜３
８−４を幹線２−２側の出力端子３６−１〜３６
−４へ切換え、これにより前記事故線２−１のテ
レビ信号を他の幹線２−２を介して加入者宅５へ
継続して供給することができる。 In the above embodiment, the switching signal is the main line 2.
-1, 2-2 via input terminals 31-1, 31-
2 or output terminals 32-1 and 32-2 to switch the changeover switches 38-1 to 39-4. With such a circuit configuration, in addition to having the same advantages as the above embodiment,
It also has the following advantages: That is, multiple trunk lines 2
- If a disconnection accident occurs on one line (for example, 2-1) among 1 and 2-2, and it becomes impossible to transmit television signals from this 1 line 2-1, the other main line 2-2 A switching signal is transmitted from the switching switch 38-1 to 38-3.
8-4 to the output terminals 36-1 to 36 on the main line 2-2 side
-4, thereby making it possible to continue supplying the television signal on the faulty line 2-1 to the subscriber's home 5 via the other main line 2-2.

第５図は本考案の他の実施例に係る分岐分配器
の構成図であり、前記実施例と異なる点は、複数
の分岐分配回路４３−１，４４−１，４５−１，
４６−１と４３−２，４４−２，４５−２，４６
−２を入出力端子３１−１，３２−１と３１−
２，３２−２との間にそれぞれ直列接続して設け
た点である。このようにしても、前記実施例と同
様の作用、効果を奏する。 FIG. 5 is a block diagram of a branch distributor according to another embodiment of the present invention, which differs from the previous embodiment in that a plurality of branch distribution circuits 43-1, 44-1, 45-1,
46-1 and 43-2, 44-2, 45-2, 46
-2 to input/output terminals 31-1, 32-1 and 31-
2 and 32-2, respectively, are connected in series. Even in this case, the same operation and effect as in the embodiment described above can be achieved.

[Effect of idea]

本考案による分岐分配器では、複数対の分岐分
配回路と、これら対をなす分岐分配回路の出力側
のいずれか１つを分岐分配出力端子に切換接続す
る切換スイツチとを筐体内に収納して構成したの
で、遠隔操作で幹線の切換えを行なつて希望のテ
レビ信号を選択受信でき、さらに幹線の増加にと
もなう分岐分配器と引込線の増設とが不必要とな
る構造簡単な分岐分配器を提供できる。 In the branch distribution device according to the present invention, a plurality of pairs of branch distribution circuits and a changeover switch for selectively connecting one of the output sides of these pairs of branch distribution circuits to a branch distribution output terminal are housed in a housing. As a result of this structure, it is possible to selectively receive a desired television signal by switching the trunk line by remote control, and furthermore, it provides a branch distributor with a simple structure that eliminates the need to add branch distributors and drop-in lines as the number of trunk lines increases. can.

[Brief explanation of drawings]

第１図は従来の分岐分配器の説明図、第２図は
出願人等が先に提案した分岐分配器の説明図、第
３図は本考案の実施例に係る分岐分配器の説明
図、第４図は第３図中の分岐分配器の構成図、第
５図は第３図中に設けられる信号切分け回路の説
明図、第６図は他の実施例に係る分岐分配器の構
成図である。２−１，２−２……テレビ信号伝送幹線、３，
３−１，３−２……分岐器および分配器、４−
１，４−２……引込線、５……加入者宅、６……
切換器、７……テレビジヨン受像機、２３……分
岐分配器、２４……切換信号発生器、３１−１，
３１−２……入力端子、３２−１，３２−２……
出力端子、３３−１，３３−２，４３−１，４４
−１，４５−１，４６−１，４３−２，４４−
２，４５−２，４６−２……分岐分配回路、３７
−１，３７−２，３７−３，３７−４……分岐分
配出力端子、３８−１，３８−２，３８−３，３
８−４……切換スイツチ。 FIG. 1 is an explanatory diagram of a conventional branch distributor, FIG. 2 is an explanatory diagram of a branch distributor previously proposed by the applicant, and FIG. 3 is an explanatory diagram of a branch distributor according to an embodiment of the present invention. FIG. 4 is a configuration diagram of the branch distributor in FIG. 3, FIG. 5 is an explanatory diagram of a signal separation circuit provided in FIG. 3, and FIG. 6 is a configuration of a branch distributor according to another embodiment. It is a diagram. 2-1, 2-2...TV signal transmission main line, 3,
3-1, 3-2... Branch and distributor, 4-
1, 4-2... service line, 5... subscriber's house, 6...
Switching device, 7... Television receiver, 23... Branching/distributing device, 24... Switching signal generator, 31-1,
31-2...Input terminal, 32-1, 32-2...
Output terminal, 33-1, 33-2, 43-1, 44
-1,45-1,46-1,43-2,44-
2, 45-2, 46-2...branch distribution circuit, 37
-1, 37-2, 37-3, 37-4...Branch distribution output terminal, 38-1, 38-2, 38-3, 3
8-4...Selector switch.

Claims

[Claims for Utility Model Registration] 1. At least one or more pairs of branch distribution circuits connected to a plurality of trunk lines and branching and distributing television signals from each trunk line, and on the output side of the pair of branch distribution circuits. A branch distribution output terminal provided, and a changeover switch provided between the output terminal and the output side of the branch distribution circuit, which switches and connects the branch distribution output terminal and the output side of the branch distribution circuit by a switching signal, A branch/distributor for communal television reception that is housed in a housing. 2 Utility Model Registration Scope of Claim 1. The branching distributor according to claim 1, wherein the changeover switch is switched by a switching signal from a subscriber's home service line connected to a branching distribution output terminal. 3 Utility Model Registration Scope of Claim 1. The branching distributor according to claim 1, wherein the changeover switch is switched by a switching signal from a main line.